Documentation: PCI: pci.rst: drop doubled words

Drop the doubled word "when".

Signed-off-by: Randy Dunlap <[e-mail]>
Acked-by: Mike Rapoport <[e-mail]>
Cc: Jonathan Corbet <[e-mail]>
Cc: [e-mail]
Cc: Bjorn Helgaas <[e-mail]>
Cc: [e-mail]
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jonathan Corbet <[e-mail]>

Documentation/PCI/pci.rst

···
    OS BUG: we don't check resource allocations before enabling those
    resources. The sequence would make more sense if we called
    pci_request_resources() before calling pci_enable_device().
-   Currently, the device drivers can't detect the bug when when two
+   Currently, the device drivers can't detect the bug when two
    devices have been allocated the same range. This is not a common
    problem and unlikely to get fixed soon.